質(zhì)譜技術(shù)應(yīng)用】如何制備亮氨酸腦啡肽溶液用于 Waters Q-Tof
菜鳥博士
如何制備亮氨酸腦啡肽溶液用于 Waters Q-Tof?- 中文版本
菜鳥博士Caesar
目的
亮氨酸腦啡肽以粉末形式裝于 3 mg 樣品瓶中。以下步驟將指導(dǎo)您制作各種濃度的亮氨酸腦啡肽。
環(huán)境
亮氨酸腦啡肽在所有 Waters Q-Tof 上均用作標(biāo)準(zhǔn)品。
亮氨酸腦啡肽
標(biāo)準(zhǔn)品
步驟
亮氨酸腦啡肽
C28H37N5O7
Tyr Gly Gly Phe Leu
Masslynx:(M+H) m/z 556.2771,(M-H) m/z 554.2615
UNIFI:(M+H)+ m/z 556.2766,(M-H)- m/z 554.2620
2 ng/μL 亮氨酸腦啡肽
使用 5 mL 移液管,向裝有 3 mg (±0.15 mg) 亮氨酸腦啡肽的瓶中加入 7.5 mL 水。
蓋上蓋子,充分搖勻,超聲處理 5 min。
貼上“400 ng /μL 亮氨酸腦啡肽水溶液”標(biāo)簽,儲存在冰箱中(有效期為三個月)。
使用 200 μL 移液管移取 100 μL 400 ng/μL 亮氨酸腦啡肽水溶液至 20 mL 容量瓶中。
用 50:50 乙腈/水 + 0.1% 甲酸定容至 20 mL,超聲處理 5 min。
貼上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸腦啡肽溶液”標(biāo)簽,儲存在冰箱中(有效期為一個月)。
對于流路系統(tǒng),將 20 mL 容量瓶的溶液轉(zhuǎn)移至 30 mL 流路容器中,并貼上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸腦啡肽溶液”,儲存于冰箱中(有效期為一個月)。
1 ng/μL 亮氨酸腦啡肽
使用 5 mL 移液管向裝有 3 mg 亮氨酸腦啡肽的瓶中加入 7.5 mL 水。
蓋上蓋子,充分搖勻,超聲處理 5 min。
貼上“400 ng /μL 亮氨酸腦啡肽水溶液”標(biāo)簽,儲存在冰箱中(有效期為三個月)。
使用 200 μL 移液管移取 50 μL 400 ng/μL 亮氨酸腦啡肽水溶液至 20 mL 容量瓶中。
用 50:50 乙腈/水 + 0.1% 甲酸定容至 20 mL,超聲處理 5 min。
將 20 mL 容量瓶中的溶液轉(zhuǎn)移至 30 mL 流路容器。
貼上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 1 ng/μL 亮氨酸腦啡肽溶液”標(biāo)簽,并儲存在冰箱中(有效期為一個月)。
200 pg/μL 亮氨酸腦啡肽
將約 4 mL 溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸腦啡肽溶液倒入 5 mL 玻璃樣品瓶中。
使用 1000 μL 移液管移取 2000 μL 溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸腦啡肽溶液至 20 mL 容量瓶中。
用 50:50 乙腈/水 + 0.1% 甲酸定容至 20 mL,超聲處理 5 min。
貼上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 200 pg/μL 亮氨酸腦啡肽溶液”標(biāo)簽,并儲存于冰箱中(有效期為兩周)。
對于流路系統(tǒng),將 20 mL 容量瓶中的溶液轉(zhuǎn)移至 30 mL 流路容器中,并貼上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 200 pg/μL 亮氨酸腦啡肽溶液”標(biāo)簽,儲存于冰箱中(有效期為兩周)。
50 pg/μL 亮氨酸腦啡肽
使用 1000 μL 移液管移取 500 μL 溶于 50:50 乙腈/水 + 0.1% 甲酸的 2 ng/μL 亮氨酸腦啡肽溶液至 20 mL 容量瓶中。
用 50:50 乙腈/水 + 0.1% 甲酸定容至 20 mL,超聲處理 5 min。
貼上“溶于 50:50 乙腈/水 + 0.1% 甲酸的 50 pg/μL 亮氨酸腦啡肽溶液”,并儲存于冰箱中(有效期為一周)。
How to prepare leucine enkephalin solution for a Waters Q-Tof? - 英文版本
Article number: 2368
OBJECTIVE or GOAL
Leucine enkephalin is supplied as a powder in a 3-mg vial. The following procedure guides you in making up various concentrations of leucine enkephalin.
ENVIRONMENT
This is a standard that is used on all of Waters Q-Tofs.
Leucine enkephalin
standard
PROCEDURE
Leucine enkephalin
C28H37N5O7
Tyr Gly Gly Phe Leu
Masslynx: (M+H) m/z 556.2771, (M-H) m/z 554.2615
UNIFI: (M+H)+ m/z 556.2766, (M-H)- m/z 554.2620
2 ng/μL leucine enkephalin
Using a 5-mL pipette, add 7.5 mL of water to the contents of a 3-mg (±0.15 mg) bottle of leucine enkephalin.
Recap, shake well, and sonicate for five minutes.
Label as "400 ng/μL leucine enkephalin in water" and store in a freezer (expires in three months).
Using a 200-μL pipette, transfer 100 μL of the 400 ng/μL leucine enkephalin in water to a 20-mL volumetric flask.
Make up to 20 mL with 50:50 acetonitrile/water + 0.1% formic acid and sonicate for five minutes.
Label as "2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a freezer (expires in one month).
For fluidics systems, transfer from the 20-mL volumetric flask to a 30-mL fluidics container and label as "2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a freezer (expires in one month).
1 ng/μL leucine enkephalin
Using a 5-mL pipette, add 7.5 mL of water to the contents of a 3-mg bottle of leucine enkephalin.
Recap, shake well, and sonicate for five minutes.
Label as "400 ng/μL leucine enkephalin in water" and store in a freezer (expires in three months).
Using a 200-μL pipette, transfer 50 μL of the 400 ng/μL leucine enkephalin in water to a 20-mL volumetric flask.
Make up to 20 mL with 50:50 acetonitrile/water + 0.1% formic acid and sonicate for five minutes.
Transfer from the 20-mL volumetric flask to a 30-mL fluidics container.
Label as "1 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a freezer (expires in one month).
200 pg/μL leucine enkephalin
Decant approximtely 4 mL of the 2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid solution into a 5-mL glass vial.
Using a 1,000-μL pipette, transfer 2,000 μL of the 2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid solution to a 20-mL volumetric flask.
Make up to 20 mL with 50:50 acetonitrile/water + 0.1% formic acid and sonicate for five minutes.
Label as "200 pg/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a refrigerator (expires in two weeks).
For fluidics systems, transfer from the 20-mL volumetric flask to a 30-mL fluidics container and label as "200 pg/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a refrigerator (expires in two weeks).
50 pg/μL leucine enkephalin
Using a 1,000 μL pipette, transfer 500 μL of the 2 ng/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid solution to a 20-mL volumetric flask.
Make up to 20 mL with 50:50 acetonitrile/water + 0.1% formic acid and sonicate for five minutes.
Label as "50 pg/μL leucine enkephalin in 50:50 acetonitrile/water + 0.1% formic acid" and store in a refrigerator (expires in one week).